SCYTHE-STM 30CAL SILENCER SINGLE PORT ANCHOR BRAKE Manufacturer Model Number: SU5421 Manufacturer: SilencerCo Model: Scythe-STM Caliber: 30 Caliber | 7.62mm Type: NFA - Silencer Item Type: NFA Overall Length: 5.1" - 6.9" Weight: 10.4 oz. - 14.7 oz. Shipping Weight: 1.0 Feature: Incl: 5/8x24 Thread Mount Feature: Bravo/ASR Mount Compatible Feature: .300 RUM Rated Optic Adjustable Objective: false Optic Reticle Illuminated: false